Hey guys,

I'm having issues with my engine. I have a thunder tiger .46 mounted inverted on my PC9. For the first couple weeks it ran great. Now its acting up. The idle is REALLY irractic. I have to keep it at a high idle (high enough where the plane moves on grass) to keep the engine running. When its idling, the RPMs go up and down. When throttling up, it runs good once the fuel is cleared out. The problem is I have to idle is soo high so I dont dead stick which causes problems because of fast landings.

I've tried what the manual said about adjusting the mixture. It stated if I pinch the fuel line to the carb and the engine revs up and then dies, it needs adjusted. Well, I adjusted it so when you pinch or disconnect the line, the engine dies (which I am assuming thats what it needs to do). I did notice the head and exhaust seem VERY VERY hot too touch.

I did the obvious like change the glow plug, check fuel lines, etc...

What to do? Is there a FAQ some where that goes in depth on adjusting 2 strokes??

Also, running an engine inverted, is there an advantage to running a short glow plug as opposed to a standard length?

Thanks!!